1 /* GIO - GLib Input, Output and Streaming Library
2 *
3 * Copyright (C) 2006-2007 Red Hat, Inc.
4 *
5 * SPDX-License-Identifier: LGPL-2.1-or-later
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General
18 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
19 *
20 * Author: Alexander Larsson <alexl@redhat.com>
21 */
22
23 #include "config.h"
24
25 #include <string.h>
26
27 #include "gfileattribute.h"
28 #include "gfileattribute-priv.h"
29 #include <glib-object.h>
30 #include "glibintl.h"
31
32
33 /**
34 * _g_file_attribute_value_free:
35 * @attr: a #GFileAttributeValue.
36 *
37 * Frees the memory used by @attr.
38 *
39 **/
40 void
41 _g_file_attribute_value_free (GFileAttributeValue *attr)
42 {
43 g_return_if_fail (attr != NULL);
44
45 _g_file_attribute_value_clear (attr);
46 g_free (attr);
47 }
48
49 /**
50 * _g_file_attribute_value_clear:
51 * @attr: a #GFileAttributeValue.
52 *
53 * Clears the value of @attr and sets its type to
54 * %G_FILE_ATTRIBUTE_TYPE_INVALID.
55 *
56 **/
57 void
58 _g_file_attribute_value_clear (GFileAttributeValue *attr)
59 {
60 g_return_if_fail (attr != NULL);
61
62 if (attr->type == G_FILE_ATTRIBUTE_TYPE_STRING ||
63 attr->type == G_FILE_ATTRIBUTE_TYPE_BYTE_STRING)
64 g_free (attr->u.string);
65
66 if (attr->type == G_FILE_ATTRIBUTE_TYPE_STRINGV)
67 g_strfreev (attr->u.stringv);
68
69 if (attr->type == G_FILE_ATTRIBUTE_TYPE_OBJECT &&
70 attr->u.obj != NULL)
71 g_object_unref (attr->u.obj);
72
73 attr->type = G_FILE_ATTRIBUTE_TYPE_INVALID;
74 }
75
76 /**
77 * g_file_attribute_value_set:
78 * @attr: a #GFileAttributeValue to set the value in.
79 * @new_value: a #GFileAttributeValue to get the value from.
80 *
81 * Sets an attribute's value from another attribute.
82 **/
83 void
84 _g_file_attribute_value_set (GFileAttributeValue *attr,
85 const GFileAttributeValue *new_value)
86 {
87 g_return_if_fail (attr != NULL);
88 g_return_if_fail (new_value != NULL);
89
90 _g_file_attribute_value_clear (attr);
91 *attr = *new_value;
92
93 if (attr->type == G_FILE_ATTRIBUTE_TYPE_STRING ||
94 attr->type == G_FILE_ATTRIBUTE_TYPE_BYTE_STRING)
95 attr->u.string = g_strdup (attr->u.string);
96
97 if (attr->type == G_FILE_ATTRIBUTE_TYPE_STRINGV)
98 attr->u.stringv = g_strdupv (attr->u.stringv);
99
100 if (attr->type == G_FILE_ATTRIBUTE_TYPE_OBJECT &&
101 attr->u.obj != NULL)
102 g_object_ref (attr->u.obj);
103 }
104
105 /**
106 * _g_file_attribute_value_new:
107 *
108 * Creates a new file attribute.
109 *
110 * Returns: a #GFileAttributeValue.
111 **/
112 GFileAttributeValue *
113 _g_file_attribute_value_new (void)
114 {
115 GFileAttributeValue *attr;
116
117 attr = g_new (GFileAttributeValue, 1);
118 attr->type = G_FILE_ATTRIBUTE_TYPE_INVALID;
119 return attr;
120 }
121
122 gpointer
123 _g_file_attribute_value_peek_as_pointer (GFileAttributeValue *attr)
124 {
125 switch (attr->type) {
126 case G_FILE_ATTRIBUTE_TYPE_STRING:
127 case G_FILE_ATTRIBUTE_TYPE_BYTE_STRING:
128 return attr->u.string;
129 case G_FILE_ATTRIBUTE_TYPE_STRINGV:
130 return attr->u.stringv;
131 case G_FILE_ATTRIBUTE_TYPE_OBJECT:
132 return attr->u.obj;
133 default:
134 return (gpointer) &attr->u;
135 }
136 }
137
138 /**
139 * g_file_attribute_value_dup:
140 * @other: a #GFileAttributeValue to duplicate.
141 *
142 * Duplicates a file attribute.
143 *
144 * Returns: a duplicate of the @other.
145 **/
146 GFileAttributeValue *
147 _g_file_attribute_value_dup (const GFileAttributeValue *other)
148 {
149 GFileAttributeValue *attr;
150
151 g_return_val_if_fail (other != NULL, NULL);
152
153 attr = g_new (GFileAttributeValue, 1);
154 attr->type = G_FILE_ATTRIBUTE_TYPE_INVALID;
155 _g_file_attribute_value_set (attr, other);
156 return attr;
157 }
158
159 G_DEFINE_BOXED_TYPE (GFileAttributeInfoList, g_file_attribute_info_list,
160 g_file_attribute_info_list_dup,
161 g_file_attribute_info_list_unref)
162
163 static gboolean
164 valid_char (char c)
165 {
166 return c >= 32 && c <= 126 && c != '\\';
167 }
168
169 static char *
170 escape_byte_string (const char *str)
171 {
172 size_t i, len;
173 int num_invalid;
174 char *escaped_val, *p;
175 unsigned char c;
176 const char hex_digits[] = "0123456789abcdef";
177
178 len = strlen (str);
179
180 num_invalid = 0;
181 for (i = 0; i < len; i++)
182 {
183 if (!valid_char (str[i]))
184 num_invalid++;
185 }
186
187 if (num_invalid == 0)
188 return g_strdup (str);
189 else
190 {
191 escaped_val = g_malloc (len + num_invalid*3 + 1);
192
193 p = escaped_val;
194 for (i = 0; i < len; i++)
195 {
196 c = str[i];
197 if (valid_char (c))
198 *p++ = c;
199 else
200 {
201 *p++ = '\\';
202 *p++ = 'x';
203 *p++ = hex_digits[(c >> 4) & 0xf];
204 *p++ = hex_digits[c & 0xf];
205 }
206 }
207 *p++ = 0;
208 return escaped_val;
209 }
210 }
211
212 /**
213 * _g_file_attribute_value_as_string:
214 * @attr: a #GFileAttributeValue.
215 *
216 * Converts a #GFileAttributeValue to a string for display.
217 * The returned string should be freed when no longer needed.
218 *
219 * Returns: a string from the @attr, %NULL on error, or "<invalid>"
220 * if @attr is of type %G_FILE_ATTRIBUTE_TYPE_INVALID.
221 */
222 char *
223 _g_file_attribute_value_as_string (const GFileAttributeValue *attr)
224 {
225 GString *s;
226 int i;
227 char *str;
228
229 g_return_val_if_fail (attr != NULL, NULL);
230
231 switch (attr->type)
232 {
233 case G_FILE_ATTRIBUTE_TYPE_STRING:
234 str = g_strdup (attr->u.string);
235 break;
236 case G_FILE_ATTRIBUTE_TYPE_STRINGV:
237 s = g_string_new ("[");
238 for (i = 0; attr->u.stringv[i] != NULL; i++)
239 {
240 g_string_append (s, attr->u.stringv[i]);
241 if (attr->u.stringv[i+1] != NULL)
242 g_string_append (s, ", ");
243 }
244 g_string_append (s, "]");
245 str = g_string_free (s, FALSE);
246 break;
247 case G_FILE_ATTRIBUTE_TYPE_BYTE_STRING:
248 str = escape_byte_string (attr->u.string);
249 break;
250 case G_FILE_ATTRIBUTE_TYPE_BOOLEAN:
251 str = g_strdup_printf ("%s", attr->u.boolean?"TRUE":"FALSE");
252 break;
253 case G_FILE_ATTRIBUTE_TYPE_UINT32:
254 str = g_strdup_printf ("%u", (unsigned int)attr->u.uint32);
255 break;
256 case G_FILE_ATTRIBUTE_TYPE_INT32:
257 str = g_strdup_printf ("%i", (int)attr->u.int32);
258 break;
259 case G_FILE_ATTRIBUTE_TYPE_UINT64:
260 str = g_strdup_printf ("%"G_GUINT64_FORMAT, attr->u.uint64);
261 break;
262 case G_FILE_ATTRIBUTE_TYPE_INT64:
263 str = g_strdup_printf ("%"G_GINT64_FORMAT, attr->u.int64);
264 break;
265 case G_FILE_ATTRIBUTE_TYPE_OBJECT:
266 str = g_strdup_printf ("%s:%p", g_type_name_from_instance
267 ((GTypeInstance *) attr->u.obj),
268 attr->u.obj);
269 break;
270 case G_FILE_ATTRIBUTE_TYPE_INVALID:
271 str = g_strdup ("<unset>");
272 break;
273 default:
274 g_warning ("Invalid type in GFileInfo attribute");
275 str = g_strdup ("<invalid>");
276 break;
277 }
278
279 return str;
280 }
281
282 /**
283 * _g_file_attribute_value_get_string:
284 * @attr: a #GFileAttributeValue.
285 *
286 * Gets the string from a file attribute value. If the value is not the
287 * right type then %NULL will be returned.
288 *
289 * Returns: the UTF-8 string value contained within the attribute, or %NULL.
290 */
291 const char *
292 _g_file_attribute_value_get_string (const GFileAttributeValue *attr)
293 {
294 if (attr == NULL)
295 return NULL;
296
297 g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_STRING, NULL);
298
299 return attr->u.string;
300 }
301
302 /**
303 * _g_file_attribute_value_get_byte_string:
304 * @attr: a #GFileAttributeValue.
305 *
306 * Gets the byte string from a file attribute value. If the value is not the
307 * right type then %NULL will be returned.
308 *
309 * Returns: the byte string contained within the attribute or %NULL.
310 */
311 const char *
312 _g_file_attribute_value_get_byte_string (const GFileAttributeValue *attr)
313 {
314 if (attr == NULL)
315 return NULL;
316
317 g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_BYTE_STRING, NULL);
318
319 return attr->u.string;
320 }
321
322 char **
323 _g_file_attribute_value_get_stringv (const GFileAttributeValue *attr)
324 {
325 if (attr == NULL)
326 return NULL;
327
328 g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_STRINGV, NULL);
329
330 return attr->u.stringv;
331 }
332
333 /**
334 * _g_file_attribute_value_get_boolean:
335 * @attr: a #GFileAttributeValue.
336 *
337 * Gets the boolean value from a file attribute value. If the value is not the
338 * right type then %FALSE will be returned.
339 *
340 * Returns: the boolean value contained within the attribute, or %FALSE.
341 */
342 gboolean
343 _g_file_attribute_value_get_boolean (const GFileAttributeValue *attr)
344 {
345 if (attr == NULL)
346 return FALSE;
347
348 g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_BOOLEAN, FALSE);
349
350 return attr->u.boolean;
351 }
352
353 /**
354 * _g_file_attribute_value_get_uint32:
355 * @attr: a #GFileAttributeValue.
356 *
357 * Gets the unsigned 32-bit integer from a file attribute value. If the value
358 * is not the right type then 0 will be returned.
359 *
360 * Returns: the unsigned 32-bit integer from the attribute, or 0.
361 */
362 guint32
363 _g_file_attribute_value_get_uint32 (const GFileAttributeValue *attr)
364 {
365 if (attr == NULL)
366 return 0;
367
368 g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_UINT32, 0);
369
370 return attr->u.uint32;
371 }
372
373 /**
374 * _g_file_attribute_value_get_int32:
375 * @attr: a #GFileAttributeValue.
376 *
377 * Gets the signed 32-bit integer from a file attribute value. If the value
378 * is not the right type then 0 will be returned.
379 *
380 * Returns: the signed 32-bit integer from the attribute, or 0.
381 */
382 gint32
383 _g_file_attribute_value_get_int32 (const GFileAttributeValue *attr)
384 {
385 if (attr == NULL)
386 return 0;
387
388 g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_INT32, 0);
389
390 return attr->u.int32;
391 }
392
393 /**
394 * _g_file_attribute_value_get_uint64:
395 * @attr: a #GFileAttributeValue.
396 *
397 * Gets the unsigned 64-bit integer from a file attribute value. If the value
398 * is not the right type then 0 will be returned.
399 *
400 * Returns: the unsigned 64-bit integer from the attribute, or 0.
401 */
402 guint64
403 _g_file_attribute_value_get_uint64 (const GFileAttributeValue *attr)
404 {
405 if (attr == NULL)
406 return 0;
407
408 g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_UINT64, 0);
409
410 return attr->u.uint64;
411 }
412
413 /**
414 * _g_file_attribute_value_get_int64:
415 * @attr: a #GFileAttributeValue.
416 *
417 * Gets the signed 64-bit integer from a file attribute value. If the value
418 * is not the right type then 0 will be returned.
419 *
420 * Returns: the signed 64-bit integer from the attribute, or 0.
421 */
422 gint64
423 _g_file_attribute_value_get_int64 (const GFileAttributeValue *attr)
424 {
425 if (attr == NULL)
426 return 0;
427
428 g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_INT64, 0);
429
430 return attr->u.int64;
431 }
432
433 /**
434 * _g_file_attribute_value_get_object:
435 * @attr: a #GFileAttributeValue.
436 *
437 * Gets the GObject from a file attribute value. If the value
438 * is not the right type then %NULL will be returned.
439 *
440 * Returns: the GObject from the attribute, or %NULL.
441 **/
442 GObject *
443 _g_file_attribute_value_get_object (const GFileAttributeValue *attr)
444 {
445 if (attr == NULL)
446 return NULL;
447
448 g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_OBJECT, NULL);
449
450 return attr->u.obj;
451 }
452
453
454 void
455 _g_file_attribute_value_set_from_pointer (GFileAttributeValue *value,
456 GFileAttributeType type,
457 gpointer value_p,
458 gboolean dup)
459 {
460 _g_file_attribute_value_clear (value);
461 value->type = type;
462 switch (type)
463 {
464 case G_FILE_ATTRIBUTE_TYPE_STRING:
465 case G_FILE_ATTRIBUTE_TYPE_BYTE_STRING:
466 if (dup)
467 value->u.string = g_strdup (value_p);
468 else
469 value->u.string = value_p;
470 break;
471
472 case G_FILE_ATTRIBUTE_TYPE_STRINGV:
473 if (dup)
474 value->u.stringv = g_strdupv (value_p);
475 else
476 value->u.stringv = value_p;
477 break;
478
479 case G_FILE_ATTRIBUTE_TYPE_OBJECT:
480 if (dup)
481 value->u.obj = g_object_ref (value_p);
482 else
483 value->u.obj = value_p;
484 break;
485
486 case G_FILE_ATTRIBUTE_TYPE_BOOLEAN:
487 value->u.boolean = *(gboolean *)value_p;
488 break;
489
490 case G_FILE_ATTRIBUTE_TYPE_UINT32:
491 value->u.uint32 = *(guint32 *)value_p;
492 break;
493
494 case G_FILE_ATTRIBUTE_TYPE_INT32:
495 value->u.int32 = *(gint32 *)value_p;
496 break;
497
498 case G_FILE_ATTRIBUTE_TYPE_UINT64:
499 value->u.uint64 = *(guint64 *)value_p;
500 break;
501
502 case G_FILE_ATTRIBUTE_TYPE_INT64:
503 value->u.int64 = *(gint64 *)value_p;
504 break;
505
506 case G_FILE_ATTRIBUTE_TYPE_INVALID:
507 break;
508
509 default:
510 g_warning ("Unknown type specified in g_file_info_set_attribute");
511 break;
512 }
513 }
514
515 /**
516 * _g_file_attribute_value_set_string:
517 * @attr: a #GFileAttributeValue.
518 * @string: a UTF-8 string to set within the type.
519 *
520 * Sets the attribute value to a given UTF-8 string.
521 */
522 void
523 _g_file_attribute_value_set_string (GFileAttributeValue *attr,
524 const char *string)
525 {
526 g_return_if_fail (attr != NULL);
527 g_return_if_fail (string != NULL);
528
529 _g_file_attribute_value_clear (attr);
530 attr->type = G_FILE_ATTRIBUTE_TYPE_STRING;
531 attr->u.string = g_strdup (string);
532 }
533
534 /**
535 * _g_file_attribute_value_set_byte_string:
536 * @attr: a #GFileAttributeValue.
537 * @string: a byte string to set within the type.
538 *
539 * Sets the attribute value to a given byte string.
540 */
541 void
542 _g_file_attribute_value_set_byte_string (GFileAttributeValue *attr,
543 const char *string)
544 {
545 g_return_if_fail (attr != NULL);
546 g_return_if_fail (string != NULL);
547
548 _g_file_attribute_value_clear (attr);
549 attr->type = G_FILE_ATTRIBUTE_TYPE_BYTE_STRING;
550 attr->u.string = g_strdup (string);
551 }
552
553 void
554 _g_file_attribute_value_set_stringv (GFileAttributeValue *attr,
555 char **value)
556 {
557 g_return_if_fail (attr != NULL);
558 g_return_if_fail (value != NULL);
559
560 _g_file_attribute_value_clear (attr);
561 attr->type = G_FILE_ATTRIBUTE_TYPE_STRINGV;
562 attr->u.stringv = g_strdupv (value);
563 }
564
565
566 /**
567 * _g_file_attribute_value_set_boolean:
568 * @attr: a #GFileAttributeValue.
569 * @value: a #gboolean to set within the type.
570 *
571 * Sets the attribute value to the given boolean value.
572 */
573 void
574 _g_file_attribute_value_set_boolean (GFileAttributeValue *attr,
575 gboolean value)
576 {
577 g_return_if_fail (attr != NULL);
578
579 _g_file_attribute_value_clear (attr);
580 attr->type = G_FILE_ATTRIBUTE_TYPE_BOOLEAN;
581 attr->u.boolean = !!value;
582 }
583
584 /**
585 * _g_file_attribute_value_set_uint32:
586 * @attr: a #GFileAttributeValue.
587 * @value: a #guint32 to set within the type.
588 *
589 * Sets the attribute value to the given unsigned 32-bit integer.
590 */
591 void
592 _g_file_attribute_value_set_uint32 (GFileAttributeValue *attr,
593 guint32 value)
594 {
595 g_return_if_fail (attr != NULL);
596
597 _g_file_attribute_value_clear (attr);
598 attr->type = G_FILE_ATTRIBUTE_TYPE_UINT32;
599 attr->u.uint32 = value;
600 }
601
602 /**
603 * _g_file_attribute_value_set_int32:
604 * @attr: a #GFileAttributeValue.
605 * @value: a #gint32 to set within the type.
606 *
607 * Sets the attribute value to the given signed 32-bit integer.
608 */
609 void
610 _g_file_attribute_value_set_int32 (GFileAttributeValue *attr,
611 gint32 value)
612 {
613 g_return_if_fail (attr != NULL);
614
615 _g_file_attribute_value_clear (attr);
616 attr->type = G_FILE_ATTRIBUTE_TYPE_INT32;
617 attr->u.int32 = value;
618 }
619
620 /**
621 * _g_file_attribute_value_set_uint64:
622 * @attr: a #GFileAttributeValue.
623 * @value: a #guint64 to set within the type.
624 *
625 * Sets the attribute value to a given unsigned 64-bit integer.
626 */
627 void
628 _g_file_attribute_value_set_uint64 (GFileAttributeValue *attr,
629 guint64 value)
630 {
631 g_return_if_fail (attr != NULL);
632
633 _g_file_attribute_value_clear (attr);
634 attr->type = G_FILE_ATTRIBUTE_TYPE_UINT64;
635 attr->u.uint64 = value;
636 }
637
638 /**
639 * _g_file_attribute_value_set_int64:
640 * @attr: a #GFileAttributeValue.
641 * @value: a #gint64 to set within the type.
642 *
643 * Sets the attribute value to a given signed 64-bit integer.
644 */
645 void
646 _g_file_attribute_value_set_int64 (GFileAttributeValue *attr,
647 gint64 value)
648 {
649 g_return_if_fail (attr != NULL);
650
651 _g_file_attribute_value_clear (attr);
652 attr->type = G_FILE_ATTRIBUTE_TYPE_INT64;
653 attr->u.int64 = value;
654 }
655
656 /**
657 * _g_file_attribute_value_set_object:
658 * @attr: a #GFileAttributeValue.
659 * @obj: a #GObject.
660 *
661 * Sets the attribute to contain the value @obj.
662 * The @attr references the GObject internally.
663 */
664 void
665 _g_file_attribute_value_set_object (GFileAttributeValue *attr,
666 GObject *obj)
667 {
668 g_return_if_fail (attr != NULL);
669 g_return_if_fail (obj != NULL);
670
671 _g_file_attribute_value_clear (attr);
672 attr->type = G_FILE_ATTRIBUTE_TYPE_OBJECT;
673 attr->u.obj = g_object_ref (obj);
674 }
675
676 typedef struct {
677 GFileAttributeInfoList public;
678 GArray *array;
679 int ref_count;
680 } GFileAttributeInfoListPriv;
681
682 static void
683 list_update_public (GFileAttributeInfoListPriv *priv)
684 {
685 priv->public.infos = (GFileAttributeInfo *)priv->array->data;
686 priv->public.n_infos = priv->array->len;
687 }
688
689 /**
690 * g_file_attribute_info_list_new:
691 *
692 * Creates a new file attribute info list.
693 *
694 * Returns: a #GFileAttributeInfoList.
695 */
696 GFileAttributeInfoList *
697 g_file_attribute_info_list_new (void)
698 {
699 GFileAttributeInfoListPriv *priv;
700
701 priv = g_new0 (GFileAttributeInfoListPriv, 1);
702
703 priv->ref_count = 1;
704 priv->array = g_array_new (TRUE, FALSE, sizeof (GFileAttributeInfo));
705
706 list_update_public (priv);
707
708 return (GFileAttributeInfoList *)priv;
709 }
710
711 /**
712 * g_file_attribute_info_list_dup:
713 * @list: a #GFileAttributeInfoList to duplicate.
714 *
715 * Makes a duplicate of a file attribute info list.
716 *
717 * Returns: a copy of the given @list.
718 */
719 GFileAttributeInfoList *
720 g_file_attribute_info_list_dup (GFileAttributeInfoList *list)
721 {
722 GFileAttributeInfoListPriv *new;
723 int i;
724
725 g_return_val_if_fail (list != NULL, NULL);
726
727 new = g_new0 (GFileAttributeInfoListPriv, 1);
728 new->ref_count = 1;
729 new->array = g_array_new (TRUE, FALSE, sizeof (GFileAttributeInfo));
730
731 g_array_set_size (new->array, list->n_infos);
732 list_update_public (new);
733 for (i = 0; i < list->n_infos; i++)
734 {
735 new->public.infos[i].name = g_strdup (list->infos[i].name);
736 new->public.infos[i].type = list->infos[i].type;
737 new->public.infos[i].flags = list->infos[i].flags;
738 }
739
740 return (GFileAttributeInfoList *)new;
741 }
742
743 /**
744 * g_file_attribute_info_list_ref:
745 * @list: a #GFileAttributeInfoList to reference.
746 *
747 * References a file attribute info list.
748 *
749 * Returns: #GFileAttributeInfoList or %NULL on error.
750 */
751 GFileAttributeInfoList *
752 g_file_attribute_info_list_ref (GFileAttributeInfoList *list)
753 {
754 GFileAttributeInfoListPriv *priv = (GFileAttributeInfoListPriv *)list;
755 int old_ref_count;
756
757 g_return_val_if_fail (list != NULL, NULL);
758
759 old_ref_count = g_atomic_int_add (&priv->ref_count, 1);
760 g_return_val_if_fail (old_ref_count > 0, NULL);
761
762 return list;
763 }
764
765 /**
766 * g_file_attribute_info_list_unref:
767 * @list: The #GFileAttributeInfoList to unreference.
768 *
769 * Removes a reference from the given @list. If the reference count
770 * falls to zero, the @list is deleted.
771 */
772 void
773 g_file_attribute_info_list_unref (GFileAttributeInfoList *list)
774 {
775 GFileAttributeInfoListPriv *priv = (GFileAttributeInfoListPriv *)list;
776 int i;
777
778 g_return_if_fail (list != NULL);
779 g_return_if_fail (priv->ref_count > 0);
780
781 if (g_atomic_int_dec_and_test (&priv->ref_count))
782 {
783 for (i = 0; i < list->n_infos; i++)
784 g_free (list->infos[i].name);
785 g_array_free (priv->array, TRUE);
786 g_free (list);
787 }
788 }
789
790 static int
791 g_file_attribute_info_list_bsearch (GFileAttributeInfoList *list,
792 const char *name)
793 {
794 int start, end, mid;
795
796 start = 0;
797 end = list->n_infos;
798
799 while (start != end)
800 {
801 mid = start + (end - start) / 2;
802
803 if (strcmp (name, list->infos[mid].name) < 0)
804 end = mid;
805 else if (strcmp (name, list->infos[mid].name) > 0)
806 start = mid + 1;
807 else
808 return mid;
809 }
810 return start;
811 }
812
813 /**
814 * g_file_attribute_info_list_lookup:
815 * @list: a #GFileAttributeInfoList.
816 * @name: the name of the attribute to look up.
817 *
818 * Gets the file attribute with the name @name from @list.
819 *
820 * Returns: a #GFileAttributeInfo for the @name, or %NULL if an
821 * attribute isn't found.
822 */
823 const GFileAttributeInfo *
824 g_file_attribute_info_list_lookup (GFileAttributeInfoList *list,
825 const char *name)
826 {
827 int i;
828
829 g_return_val_if_fail (list != NULL, NULL);
830 g_return_val_if_fail (name != NULL, NULL);
831
832 i = g_file_attribute_info_list_bsearch (list, name);
833
834 if (i < list->n_infos && strcmp (list->infos[i].name, name) == 0)
835 return &list->infos[i];
836
837 return NULL;
838 }
839
840 /**
841 * g_file_attribute_info_list_add:
842 * @list: a #GFileAttributeInfoList.
843 * @name: the name of the attribute to add.
844 * @type: the #GFileAttributeType for the attribute.
845 * @flags: #GFileAttributeInfoFlags for the attribute.
846 *
847 * Adds a new attribute with @name to the @list, setting
848 * its @type and @flags.
849 */
850 void
851 g_file_attribute_info_list_add (GFileAttributeInfoList *list,
852 const char *name,
853 GFileAttributeType type,
854 GFileAttributeInfoFlags flags)
855 {
856 GFileAttributeInfoListPriv *priv = (GFileAttributeInfoListPriv *)list;
857 GFileAttributeInfo info;
858 int i;
859
860 g_return_if_fail (list != NULL);
861 g_return_if_fail (name != NULL);
862
863 i = g_file_attribute_info_list_bsearch (list, name);
864
865 if (i < list->n_infos && strcmp (list->infos[i].name, name) == 0)
866 {
867 list->infos[i].type = type;
868 return;
869 }
870
871 info.name = g_strdup (name);
872 info.type = type;
873 info.flags = flags;
874 g_array_insert_vals (priv->array, i, &info, 1);
875
876 list_update_public (priv);
877 }